312122343221212 has 12 divisors (see below), whose sum is σ = 549879967085400. Its totient is φ = 155013781196816.

The previous prime is 312122343221189. The next prime is 312122343221243. The reversal of 312122343221212 is 212122343221213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261847602778 + ... + 261847603969.

It is an arithmetic number, because the mean of its divisors is an integer number (45823330590450).

Almost surely, 2^{312122343221212} is an apocalyptic number.

It is an amenable number.

312122343221212 is a deficient number, since it is larger than the sum of its proper divisors (237757623864188).

312122343221212 is a wasteful number, since it uses less digits than its factorization.

312122343221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523695206900 (or 523695206898 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

Adding to 312122343221212 its reverse (212122343221213), we get a palindrome (524244686442425).

Subtracting from 312122343221212 its reverse (212122343221213), we obtain a palindrome (99999999999999).

The spelling of 312122343221212 in words is "three hundred twelve trillion, one hundred twenty-two billion, three hundred forty-three million, two hundred twenty-one thousand, two hundred twelve".